@ Practice03-Hello_World

		adr r0, msg
		ldr r1, addr_screen
loop: 	ldrb r2, r0
		cmp r2, #0
		beq done
		strb r2, [r1]
		add r0, r0, #1
		add r1, r1, #1
		b loop
done:
		b halt

addr_screen: .word 0xd0000
msg:	.asciz "Hello, world!"